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    1: /* posixselect.h -- wrapper for select(2) includes and definitions */
    2: 
    3: /* Copyright (C) 2009 Free Software Foundation, Inc.
    4: 
    5:    This file is part of GNU Bash, the Bourne Again SHell.
    6: 
    7:    Bash is free software: you can redistribute it and/or modify
    8:    it under the terms of the GNU General Public License as published by
    9:    the Free Software Foundation, either version 3 of the License, or
   10:    (at your option) any later version.
   11: 
   12:    Bash is distributed in the hope that it will be useful,
   13:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   14:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15:    GNU General Public License for more details.
   16: 
   17:    You should have received a copy of the GNU General Public License
   18:    along with Bash.  If not, see <http://www.gnu.org/licenses/>.
   19: */
   20: 
   21: #ifndef _POSIXSELECT_H_
   22: #define _POSIXSELECT_H_
   23: 
   24: #if defined (FD_SET) && !defined (HAVE_SELECT)
   25: #  define HAVE_SELECT 1
   26: #endif
   27: 
   28: #if defined (HAVE_SELECT)
   29: #  if !defined (HAVE_SYS_SELECT_H) || !defined (M_UNIX)
   30: #    include <sys/time.h>
   31: #  endif
   32: #endif /* HAVE_SELECT */
   33: #if defined (HAVE_SYS_SELECT_H)
   34: #  include <sys/select.h>
   35: #endif
   36: 
   37: #ifndef USEC_PER_SEC
   38: #  define USEC_PER_SEC 1000000
   39: #endif
   40: 
   41: #define USEC_TO_TIMEVAL(us, tv) \
   42: do { \
   43:   (tv).tv_sec = (us) / USEC_PER_SEC; \
   44:   (tv).tv_usec = (us) % USEC_PER_SEC; \
   45: } while (0)
   46: 
   47: #endif /* _POSIXSELECT_H_ */